This technique is a specialty of the Inuzuka clan, following the principles of the clan's use of ninken partners. After creating a shadow clone, the user fuses with this clone and their ninken companion into a gigantic, three-headed wolf. This drastically increases their size and power, whilst also gaining them sharp claws and canine teeth. In their direct attacks, they demonstrate considerable efficiency. Furthermore, using techniques in addition to this gives birth to an extraordinary destructive power.